How long is your small intestine? With a few items from around the house, you can learn the science behind your small intestine. Use the yardstick to measure and cut 23 feet of yarn or rope. The yarn ...

It was the ancient Greeks who first divided the 20-foot length of the small intestine into three parts: The duodenum, the jejunum and the ileum. However, the organ may finally be ready for an update: ...

This story is part of a series exploring human anatomy and physiology complexities. Each story in this collection showcases discoveries reshaping our understanding of the body's inner workings, ...